Mechanical Commissioning Engineer - Nuclear Fuel Handling

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Why Join the Community of Switchers?

As a member of Assystem, you'll be part of a team driving the low-carbon energy future. We’re ranked second globally in nuclear engineering, offering you the chance to work on world-class projects like Hinkley Point

C. Together, we’ll innovate and shape tomorrow’s energy solutions.

About Assystem

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Why Join the Community of Switchers?

As a member of Assystem, you'll be part of a team driving the low-carbon energy future. We’re ranked second globally in nuclear engineering, offering you the chance to work on world-class projects like Hinkley Point

C. Together, we’ll innovate and shape tomorrow’s energy solutions.

This role supports major nuclear programmes and is ideally suited to candidates within commuting distance of Bridgwater or those willing to relocate with relocation support available.

You will lead commissioning activities for critical radioactive waste systems across a major nuclear project.

The role combines commissioning delivery, technical leadership and stakeholder engagement throughout project lifecycle phases.

• Develop commissioning documentation supporting testing and system validation activities
• Manage full commissioning lifecycle for multiple radioactive waste systems
• Review plant designs to optimise commissioning and operational readiness
• Lead commissioning test programmes and analyse commissioning results
• Supervise contractor commissioning personnel during on-site activities
• Produce reports demonstrating system readiness and commissioning outcomes
• Collaborate with designers, contractors and operational stakeholders
• Ensure compliance with nuclear safety and regulatory requirements
• Support commissioning planning, milestones and project delivery objectives
• Maintain safe and effective interfaces throughout commissioning activities

• Degree, HNC/HND in Mechanical, Nuclear, Process or Power Engineering
• Strong knowledge of mechanical systems within industrial environments
• Experience commissioning large industrial or power generation systems
• Nuclear sector experience, particularly Nuclear Island systems preferred
• Experience developing commissioning procedures and test documentation
• Knowledge of nuclear safety requirements and regulatory compliance
• Strong understanding of commissioning methodologies and system validation
• Excellent communication and stakeholder management capabilities
• Strong planning, coordination and organisational skills
• Fluent English communication skills, written and verbal

What we offer

• Hybrid Working – Flexibility to work from home and the office
• 25 Days Annual Leave + Bank Holidays
• Buy & Sell Holiday – Make your time off work for you
• 8% Company Pension Contributions
• Income Protection & 3x Salary Death-in-Service Cover
• Competitive Sick Pay – Support when you…